[deliverable/linux.git] / net / mac80211 / pm.c

#include <net/mac80211.h>
#include <net/rtnetlink.h>

#include "ieee80211_i.h"
#include "mesh.h"
#include "driver-ops.h"
#include "led.h"

int __ieee80211_suspend(struct ieee80211_hw *hw)
{
	struct ieee80211_local *local = hw_to_local(hw);
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;

	ieee80211_scan_cancel(local);

	ieee80211_stop_queues_by_reason(hw,
			IEEE80211_QUEUE_STOP_REASON_SUSPEND);

	/* flush out all packets */
	synchronize_net();

	local->quiescing = true;
	/* make quiescing visible to timers everywhere */
	mb();

	flush_workqueue(local->workqueue);

	/* Don't try to run timers while suspended. */
	del_timer_sync(&local->sta_cleanup);

	 /*
	 * Note that this particular timer doesn't need to be
	 * restarted at resume.
	 */
	cancel_work_sync(&local->dynamic_ps_enable_work);
	del_timer_sync(&local->dynamic_ps_timer);

	/* disable keys */
	list_for_each_entry(sdata, &local->interfaces, list)
		ieee80211_disable_keys(sdata);

	/* tear down aggregation sessions and remove STAs */
	mutex_lock(&local->sta_mtx);
	list_for_each_entry(sta, &local->sta_list, list) {
		if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
			set_sta_flags(sta, WLAN_STA_BLOCK_BA);
			ieee80211_sta_tear_down_BA_sessions(sta);
		}

		if (sta->uploaded) {
			sdata = sta->sdata;
			if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
				sdata = container_of(sdata->bss,
					     struct ieee80211_sub_if_data,
					     u.ap);

			drv_sta_remove(local, sdata, &sta->sta);
		}

		mesh_plink_quiesce(sta);
	}
	mutex_unlock(&local->sta_mtx);

	/* remove all interfaces */
	list_for_each_entry(sdata, &local->interfaces, list) {
		switch(sdata->vif.type) {
		case NL80211_IFTYPE_STATION:
			ieee80211_sta_quiesce(sdata);
			break;
		case NL80211_IFTYPE_ADHOC:
			ieee80211_ibss_quiesce(sdata);
			break;
		case NL80211_IFTYPE_MESH_POINT:
			ieee80211_mesh_quiesce(sdata);
			break;
		case NL80211_IFTYPE_AP_VLAN:
		case NL80211_IFTYPE_MONITOR:
			/* don't tell driver about this */
			continue;
		default:
			break;
		}

		if (!ieee80211_sdata_running(sdata))
			continue;

		/* disable beaconing */
		ieee80211_bss_info_change_notify(sdata,
			BSS_CHANGED_BEACON_ENABLED);

		drv_remove_interface(local, &sdata->vif);
	}

	/* stop hardware - this must stop RX */
	if (local->open_count)
		ieee80211_stop_device(local);

	local->suspended = true;
	/* need suspended to be visible before quiescing is false */
	barrier();
	local->quiescing = false;

	return 0;
}

/*
 * __ieee80211_resume() is a static inline which just calls
 * ieee80211_reconfig(), which is also needed for hardware
 * hang/firmware failure/etc. recovery.
 */
Commit	Line	Data
665af4fc BC	1	#include <net/mac80211.h>
	2	#include <net/rtnetlink.h>
	3
	4	#include "ieee80211_i.h"
5bb644a0	5	#include "mesh.h"
24487981	6	#include "driver-ops.h"
665af4fc BC	7	#include "led.h"
	8
	9	int __ieee80211_suspend(struct ieee80211_hw *hw)
	10	{
	11	struct ieee80211_local *local = hw_to_local(hw);
	12	struct ieee80211_sub_if_data *sdata;
665af4fc BC	13	struct sta_info *sta;
665af4fc BC	14
5bb644a0 JB	15	ieee80211_scan_cancel(local);
5bb644a0 JB	16
25420604 JB	17	ieee80211_stop_queues_by_reason(hw,
	18	IEEE80211_QUEUE_STOP_REASON_SUSPEND);
	19
5bb644a0 JB	20	/* flush out all packets */
	21	synchronize_net();
	22
	23	local->quiescing = true;
	24	/* make quiescing visible to timers everywhere */
	25	mb();
	26
42935eca	27	flush_workqueue(local->workqueue);
665af4fc	28
5bb644a0 JB	29	/* Don't try to run timers while suspended. */
	30	del_timer_sync(&local->sta_cleanup);
	31
	32	/*
	33	* Note that this particular timer doesn't need to be
	34	* restarted at resume.
	35	*/
	36	cancel_work_sync(&local->dynamic_ps_enable_work);
	37	del_timer_sync(&local->dynamic_ps_timer);
	38
665af4fc BC	39	/* disable keys */
	40	list_for_each_entry(sdata, &local->interfaces, list)
	41	ieee80211_disable_keys(sdata);
	42
2a419056 JB	43	/* tear down aggregation sessions and remove STAs */
	44	mutex_lock(&local->sta_mtx);
	45	list_for_each_entry(sta, &local->sta_list, list) {
	46	if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
618f356b	47	set_sta_flags(sta, WLAN_STA_BLOCK_BA);
722f069a S	48	ieee80211_sta_tear_down_BA_sessions(sta);
722f069a S	49	}
722f069a	50
34e89507	51	if (sta->uploaded) {
5bb644a0	52	sdata = sta->sdata;
665af4fc BC	53	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
	54	sdata = container_of(sdata->bss,
	55	struct ieee80211_sub_if_data,
	56	u.ap);
	57
34e89507	58	drv_sta_remove(local, sdata, &sta->sta);
665af4fc	59	}
5bb644a0 JB	60
5bb644a0 JB	61	mesh_plink_quiesce(sta);
665af4fc	62	}
34e89507	63	mutex_unlock(&local->sta_mtx);
665af4fc BC	64
	65	/* remove all interfaces */
	66	list_for_each_entry(sdata, &local->interfaces, list) {
5bb644a0 JB	67	switch(sdata->vif.type) {
	68	case NL80211_IFTYPE_STATION:
	69	ieee80211_sta_quiesce(sdata);
	70	break;
	71	case NL80211_IFTYPE_ADHOC:
	72	ieee80211_ibss_quiesce(sdata);
	73	break;
	74	case NL80211_IFTYPE_MESH_POINT:
	75	ieee80211_mesh_quiesce(sdata);
	76	break;
	77	case NL80211_IFTYPE_AP_VLAN:
	78	case NL80211_IFTYPE_MONITOR:
	79	/* don't tell driver about this */
	80	continue;
	81	default:
	82	break;
665af4fc	83	}
665af4fc	84
9607e6b6	85	if (!ieee80211_sdata_running(sdata))
5bb644a0	86	continue;
e874e658	87
97af7432 BC	88	/* disable beaconing */
	89	ieee80211_bss_info_change_notify(sdata,
	90	BSS_CHANGED_BEACON_ENABLED);
	91
1ed32e4f	92	drv_remove_interface(local, &sdata->vif);
665af4fc	93	}
5bb644a0	94
89c3a8ac	95	/* stop hardware - this must stop RX */
84f6a01c JB	96	if (local->open_count)
84f6a01c JB	97	ieee80211_stop_device(local);
89c3a8ac	98
5bb644a0	99	local->suspended = true;
89c3a8ac JB	100	/* need suspended to be visible before quiescing is false */
89c3a8ac JB	101	barrier();
5bb644a0 JB	102	local->quiescing = false;
5bb644a0 JB	103
665af4fc BC	104	return 0;
	105	}
	106
f2753ddb JB	107	/*
	108	* __ieee80211_resume() is a static inline which just calls
	109	* ieee80211_reconfig(), which is also needed for hardware
	110	* hang/firmware failure/etc. recovery.
	111	*/